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#include <QtDebug>
#include <QDomNode>
#include <QEvent>
#include <QDragEnterEvent>
#include <QUrl>
#include <QPainter>
#include <QMimeData>
#include "controlobject.h"
#include "controlobjectthreadmain.h"
#include "trackinfoobject.h"
#include "waveform/widgets/waveformwidgetabstract.h"
#include "widget/wwaveformviewer.h"
#include "waveform/waveformwidgetfactory.h"
#include "controlpotmeter.h"
WWaveformViewer::WWaveformViewer(const char *group, ConfigObject<ConfigValue>* pConfig, QWidget * parent)
: QWidget(parent),
m_pGroup(group),
m_pConfig(pConfig) {
setAcceptDrops(true);
m_bScratching = false;
m_bBending = false;
m_pZoom = new ControlObjectThread(group, "waveform_zoom");
connect(m_pZoom, SIGNAL(valueChanged(double)),
this, SLOT(onZoomChange(double)));
m_pScratchPositionEnable = new ControlObjectThread(
group, "scratch_position_enable");
m_pScratchPosition = new ControlObjectThread(
group, "scratch_position");
setAttribute(Qt::WA_OpaquePaintEvent);
m_zoomZoneWidth = 20;
m_waveformWidget = NULL;
}
WWaveformViewer::~WWaveformViewer() {
//qDebug() << "~WWaveformViewer";
delete m_pZoom;
delete m_pScratchPositionEnable;
delete m_pScratchPosition;
}
void WWaveformViewer::setup(QDomNode node) {
if (m_waveformWidget)
m_waveformWidget->setup(node);
}
void WWaveformViewer::resizeEvent(QResizeEvent* /*event*/) {
if (m_waveformWidget) {
m_waveformWidget->resize(width(),height());
}
}
void WWaveformViewer::mousePressEvent(QMouseEvent* event) {
m_mouseAnchor = event->pos();
if(event->button() == Qt::LeftButton) {
// If we are pitch-bending then disable and reset because the two
// shouldn't be used at once.
if (m_bBending) {
emit(valueChangedRightDown(64));
m_bBending = false;
}
m_bScratching = true;
double audioSamplePerPixel = m_waveformWidget->getAudioSamplePerPixel();
double targetPosition = -1.0 * event->pos().x() * audioSamplePerPixel * 2;
m_pScratchPosition->slotSet(targetPosition);
m_pScratchPositionEnable->slotSet(1.0f);
} else if (event->button() == Qt::RightButton) {
// If we are scratching then disable and reset because the two shouldn't
// be used at once.
if (m_bScratching) {
m_pScratchPositionEnable->slotSet(0.0f);
m_bScratching = false;
}
emit(valueChangedRightDown(64));
m_bBending = true;
}
// Set the cursor to a hand while the mouse is down.
setCursor(Qt::ClosedHandCursor);
}
void WWaveformViewer::mouseMoveEvent(QMouseEvent* event) {
// Only send signals for mouse moving if the left button is pressed
if (m_bScratching && m_waveformWidget) {
// Adjusts for one-to-one movement.
double audioSamplePerPixel = m_waveformWidget->getAudioSamplePerPixel();
double targetPosition = -1.0 * event->pos().x() * audioSamplePerPixel * 2;
//qDebug() << "Target:" << targetPosition;
m_pScratchPosition->slotSet(targetPosition);
} else if (m_bBending) {
QPoint diff = event->pos() - m_mouseAnchor;
// start at the middle of 0-127, and emit values based on
// how far the mouse has traveled horizontally
double v = 64.0 + diff.x()/10.0f;
// clamp to [0, 127]
v = math_min(127.0, math_max(0.0, v));
emit(valueChangedRightDown(v));
}
}
void WWaveformViewer::mouseReleaseEvent(QMouseEvent* /*event*/) {
if (m_bScratching) {
m_pScratchPositionEnable->slotSet(0.0f);
m_bScratching = false;
}
if (m_bBending) {
emit(valueChangedRightDown(64));
m_bBending = false;
}
m_mouseAnchor = QPoint();
// Set the cursor back to an arrow.
setCursor(Qt::ArrowCursor);
}
void WWaveformViewer::wheelEvent(QWheelEvent *event) {
if (m_waveformWidget) {
//NOTE: (vrince) to limit the zoom action area uncomment the following line
//if (event->x() > width() - m_zoomZoneWidth) {
if (event->delta() > 0) {
//qDebug() << "WaveformWidgetRenderer::wheelEvent +1";
onZoomChange(m_waveformWidget->getZoomFactor()+1);
}
else {
//qDebug() << "WaveformWidgetRenderer::wheelEvent -1";
onZoomChange(m_waveformWidget->getZoomFactor()-1);
}
//}
}
}
/** DRAG AND DROP **/
void WWaveformViewer::dragEnterEvent(QDragEnterEvent * event) {
// Accept the enter event if the thing is a filepath.
if (event->mimeData()->hasUrls() &&
event->mimeData()->urls().size() > 0) {
// Accept if the Deck isn't playing or the settings allow to interrupt a playing deck
if ((!ControlObject::get(ConfigKey(m_pGroup, "play")) ||
m_pConfig->getValueString(ConfigKey("[Controls]","AllowTrackLoadToPlayingDeck")).toInt())) {
event->acceptProposedAction();
} else {
event->ignore();
}
}
}
void WWaveformViewer::dropEvent(QDropEvent * event) {
if (event->mimeData()->hasUrls() &&
event->mimeData()->urls().size() > 0) {
QList<QUrl> urls(event->mimeData()->urls());
QUrl url = urls.first();
QString name = url.toLocalFile();
//If the file is on a network share, try just converting the URL to a string...
if (name == "")
name = url.toString();
event->accept();
emit(trackDropped(name, m_pGroup));
} else {
event->ignore();
}
}
void WWaveformViewer::onTrackLoaded( TrackPointer track) {
if (m_waveformWidget)
m_waveformWidget->setTrack(track);
}
void WWaveformViewer::onTrackUnloaded( TrackPointer /*track*/) {
if (m_waveformWidget)
m_waveformWidget->setTrack(TrackPointer(0));
}
void WWaveformViewer::onZoomChange(double zoom) {
//qDebug() << "WaveformWidgetRenderer::onZoomChange" << this << zoom;
setZoom(zoom);
//notify back the factory to sync zoom if needed
WaveformWidgetFactory::instance()->notifyZoomChange(this);
}
void WWaveformViewer::setZoom(int zoom) {
//qDebug() << "WaveformWidgetRenderer::setZoom" << zoom;
if (m_waveformWidget) {
m_waveformWidget->setZoom(zoom);
m_pZoom->slotSet(zoom);
}
}
void WWaveformViewer::setWaveformWidget(WaveformWidgetAbstract* waveformWidget) {
if (m_waveformWidget) {
QWidget* pWidget = m_waveformWidget->getWidget();
disconnect(pWidget, SIGNAL(destroyed()),
this, SLOT(slotWidgetDead()));
}
m_waveformWidget = waveformWidget;
if (m_waveformWidget) {
QWidget* pWidget = m_waveformWidget->getWidget();
connect(pWidget, SIGNAL(destroyed()),
this, SLOT(slotWidgetDead()));
}
}
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